Exchange Current Density for Cathodic Reaction from Tafel Equation Solution

STEP 0: Pre-Calculation Summary
Formula Used
Exchange Current Density = Electric Current Density/(10^(Overpotential/-Tafel Slope))
i0 = i/(10^(η/-Aslope))
This formula uses 4 Variables
Variables Used
Exchange Current Density - (Measured in Ampere per Square Meter) - The Exchange Current Density is defined as the current in the absence of net electrolysis and at zero overpotential.
Electric Current Density - (Measured in Ampere per Square Meter) - The Electric current density is the amount of charge per unit of time that flows through the unit area of a chosen cross-section.
Overpotential - (Measured in Volt) - The Overpotential is the potential difference between a half-reaction's thermodynamically determined reduction potential and the potential at which the redox event is experimentally observed.
Tafel Slope - (Measured in Volt) - The Tafel Slope describes how the electrical current through an electrode depends on the voltage difference between the electrode and the bulk electrolyte. The Tafel slope is measured experimentally.
STEP 1: Convert Input(s) to Base Unit
Electric Current Density: 10 Ampere per Square Meter --> 10 Ampere per Square Meter No Conversion Required
Overpotential: 12 Volt --> 12 Volt No Conversion Required
Tafel Slope: 7 Volt --> 7 Volt No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
i0 = i/(10^(η/-Aslope)) --> 10/(10^(12/-7))
Evaluating ... ...
i0 = 517.947467923121
STEP 3: Convert Result to Output's Unit
517.947467923121 Ampere per Square Meter --> No Conversion Required
FINAL ANSWER
517.947467923121 Ampere per Square Meter <-- Exchange Current Density
(Calculation completed in 00.016 seconds)

Credits

Created by Prashant Singh
K J Somaiya College of science (K J Somaiya), Mumbai
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National Institute of Technology (NIT), Meghalaya
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Exchange Current Density for Cathodic Reaction from Tafel Equation Formula

Exchange Current Density = Electric Current Density/(10^(Overpotential/-Tafel Slope))
i0 = i/(10^(η/-Aslope))

What is Tafel equation?

The Tafel equation is an equation in electrochemical kinetics relating the rate of an electrochemical reaction to the overpotential. The Tafel equation was first deduced experimentally and was later shown to have a theoretical justification. The equation is named after Swiss chemist Julius Tafel.
" It describes how the electrical current through an electrode depends on the voltage difference between the electrode and the bulk electrolyte for a simple, unimolecular redox reaction ".

How to Calculate Exchange Current Density for Cathodic Reaction from Tafel Equation?

Exchange Current Density for Cathodic Reaction from Tafel Equation calculator uses Exchange Current Density = Electric Current Density/(10^(Overpotential/-Tafel Slope)) to calculate the Exchange Current Density, The Exchange current density for cathodic reaction from Tafel equation formula is defined as the ratio of electric density and the antilog of overpotential to the negative of Tafel slope. Exchange Current Density is denoted by i0 symbol.

How to calculate Exchange Current Density for Cathodic Reaction from Tafel Equation using this online calculator? To use this online calculator for Exchange Current Density for Cathodic Reaction from Tafel Equation, enter Electric Current Density (i), Overpotential (η) & Tafel Slope (Aslope) and hit the calculate button. Here is how the Exchange Current Density for Cathodic Reaction from Tafel Equation calculation can be explained with given input values -> 517.9475 = 10/(10^(12/-7)).

FAQ

What is Exchange Current Density for Cathodic Reaction from Tafel Equation?
The Exchange current density for cathodic reaction from Tafel equation formula is defined as the ratio of electric density and the antilog of overpotential to the negative of Tafel slope and is represented as i0 = i/(10^(η/-Aslope)) or Exchange Current Density = Electric Current Density/(10^(Overpotential/-Tafel Slope)). The Electric current density is the amount of charge per unit of time that flows through the unit area of a chosen cross-section, The Overpotential is the potential difference between a half-reaction's thermodynamically determined reduction potential and the potential at which the redox event is experimentally observed & The Tafel Slope describes how the electrical current through an electrode depends on the voltage difference between the electrode and the bulk electrolyte. The Tafel slope is measured experimentally.
How to calculate Exchange Current Density for Cathodic Reaction from Tafel Equation?
The Exchange current density for cathodic reaction from Tafel equation formula is defined as the ratio of electric density and the antilog of overpotential to the negative of Tafel slope is calculated using Exchange Current Density = Electric Current Density/(10^(Overpotential/-Tafel Slope)). To calculate Exchange Current Density for Cathodic Reaction from Tafel Equation, you need Electric Current Density (i), Overpotential (η) & Tafel Slope (Aslope). With our tool, you need to enter the respective value for Electric Current Density, Overpotential & Tafel Slope and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
How many ways are there to calculate Exchange Current Density?
In this formula, Exchange Current Density uses Electric Current Density, Overpotential & Tafel Slope. We can use 1 other way(s) to calculate the same, which is/are as follows -
  • Exchange Current Density = Electric Current Density/(10^(Overpotential/+Tafel Slope))
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